51419564 has 12 divisors (see below), whose sum is σ = 102839184. Its totient is φ = 22036944.

The previous prime is 51419539. The next prime is 51419569. The reversal of 51419564 is 46591415.

51419564 is an admirable number.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (51419569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 918179 + ... + 918234.

It is an arithmetic number, because the mean of its divisors is an integer number (8569932).

Almost surely, 2^51419564 is an apocalyptic number.

It is an amenable number.

51419564 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51419564 is a wasteful number, since it uses less digits than its factorization.

51419564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1836424 (or 1836422 counting only the distinct ones).

The product of its digits is 21600, while the sum is 35.

The square root of 51419564 is about 7170.7436155534. The cubic root of 51419564 is about 371.8571444384.

The spelling of 51419564 in words is "fifty-one million, four hundred nineteen thousand, five hundred sixty-four".